Watch This: Beyoncé, Chris Rock and More 'Demand a Plan'

Beyoncé was joined by celebrities including Chris Rock, Jamie Foxx, Gwyneth Paltrow, Rashida Jones, Jennifer Aniston, John Legend and professional athletes Chris Paul and Victor Cruz, among others, to "Demand a Plan," a PSA on gun control. It was released on Friday, Dec. 21, the same day as the NRA's fateful press conference.